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• Why it's failed to load main-class manifest attribute from jar-file?

  - by Roman

  I have created a jar file in this way jar cf jar-file input-files. Now I try to run it. This does not work: jre -cp app.jar MainClass (jre command is not found). This java -jar main.jar also does not work (Failed to load Main-Class manifest attribute from main.jar). I also found out that To run an application packaged as a JAR file …

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• Using DisplayTag library, I want to have the currently selected row have a unique custom class using

  - by Mary

  I have been trying to figure out how to highlight the selected row in a table. In my jsp I have jsp scriplet that can get access to the id of the row the displaytag library is creating. I want to compare it to the the id of the current row selected by the user ${currentNoteId}. Right now if the row id = 849 (hardcoded) the class…

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• Language Agnostic Basic Programming Question

  - by Rachel

  This is very basic question from programming point of view but as I am in learning phase, I thought I would better ask this question rather than having a misunderstanding or narrow knowledge about the topic. So do excuse me if somehow I mess it up. Question: Let's say I have class A,B,C and D now class A has some piece of…

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• expecting tASSOC in a Rails file

  - by steven_noble

  I'm sure I've done something stupid here, but I just can't see it. I call the breadcrumb method in the application view. app/helpers/breadcrumbs_helper.rb says: module BreadcrumbsHelper def breadcrumb @crumb_list = [] drominay_crumb_builder project_crumb_builder content_tag(:div, :id => "breadcrumbs",…

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• How to set post parameters in WebClient class in a Silverlight app.

  - by cmaduro

  First of all, I wrote a simple php page, that picks up some variables from the POST parameters such as a query and a authentication string, and returns the result as xml. I intend to call this page with the WebClient class from a Silverlight application. I'm using POST because we are querying the database with any valid sql…

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• MVC2 DataAnnotations validation with inheritance

  - by bhiku

  Hi, I have a .NET 2.0 class the properties of which are marked virtual.I need to use the class as a model in a MVC2 application. So, I have created a .NET 3.5 class inheriting from the .NET 2.0 class and added the DataAnnotations attributes to the overriden properties in the new class. A snippet of what I have done is below…

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• Best methods for Lazy Initialization with properties

  - by Stuart Pegg

  I'm currently altering a widely used class to move as much of the expensive initialization from the class constructor into Lazy Initialized properties. Below is an example (in c#): Before: public class ClassA { public readonly ClassB B; public void ClassA() { B = new ClassB(); } } After: public…

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• Auth problem on Facebook using Ruby/sinatra/frankie/facebooker

  - by user84584

  Hello guys, I'm using sinatra/frankie/facebooker to prototype something simple to test the facebook api, i'm using mmangino-facebooker the more recent version from github and I cloned the most recent version of frankie. I'm using sinatra 0.9.6. My main code is as simple as possible: before do …

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• Debugging cucumber/gem dependencies

  - by mobmad

  How do you debug and fix gem errors like below? Although the below case is very specific, I'm also looking for solution to related problems like "gem already activated [...]", and resources to gem management/debugging. mycomputer:projectfolder username$ cucumber features Using the default…

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• Injection with google guice does not work anymore after obfuscation with proguard

  - by sme

  Has anyone ever tried to combine the use of google guice with obfuscation (in particular proguard)? The obfuscated version of my code does not work with google guice as guice complains about missing type parameters. This information seems to be erased by the transformation step that…

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• Django Error - AttributeError: 'Settings' object has no attribute 'LOCALE_PATHS'

  - by Randy Simon

  I am trying to learn django by following along with this tutorial. I am using django version 1.1.1 I run django-admin.py startproject mysite and it creates the files it should. Then I try to start the server by running python manage.py runserver but here is where I get the…

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• Using Reflection.Emit to match existing constructor

  - by yodaj007

  First, here is the C# code and the disassembled IL: public class Program<T> { private List<T> _items; public Program(T x, [Microsoft.Scripting.ParamDictionary] Microsoft.Scripting.IAttributesCollection col) { _items = new List<T>(); …

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• New Windows 7 Libraries created keep disappearing

  - by Sean

  I've just got a new laptop that came pre-installed with Windows 7 Professional edition. One of the new features of Windows 7 is Libraries. I'm familiar with how this works and am trying to create my own library called 'Work' to include all my work folders on my computer.…

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• python manage.py runserver fails

  - by Randy Simon

  I am trying to learn django by following along with this tutorial. I am using django version 1.1.1 I run django-admin.py startproject mysite and it creates the files it should. Then I try to start the server by running python manage.py runserver but here is where I…

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• Just quick: How do you call a mutator from within a constructor in the same class?

  - by Blockhead

  For a homework assignment the instructions state (within Undergrad class): You do NOT need to include a default constructor, but you must write a full parameterized constructor (it takes 4 arguments) -- this constructor calls the parent class parameterized constructor…

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• Jets3t on Android

  - by Chubbs

  Hey guys, I am trying to use the Jets3t library within an Android application, and I keep getting errors with the Rest service when I use the library. 04-27 16:47:39.491: ERROR/S3Service(225): Couldn't initialize a sax driver for the XMLReader I have tried to…

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• Liskov Substitution Principle and the Oft Forgot Third Wheel

  - by Stacy Vicknair

  Liskov Substitution Principle (LSP) is a principle of object oriented programming that many might be familiar with from the SOLID principles mnemonic from Uncle Bob Martin. The principle highlights the relationship between a type and its subtypes, and, according…

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• Reflection Permission problems when using the GSON library in a applet.

  - by mridang

  I'm writing an Applet that makes some JSON-RPC calls. I'm using the Google JSON library (GSON) to cast the response JSON into a class. Thsi seems to work fine as is but when I use this code in my Applet, I'm hit with a java.lang.reflect.reflectpermission. From…

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• How do you mark class with TypeConverter that is not in referenced solution?

  - by Greg McGuffey

  I have a class that I've written a TypeConverter for. I want to keep the TypeConverter separate from the main solution, as it is only needed at design time and have an extensibility project now that contains the TypeConverter. Thus, when I deploy, I don't need…

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• Abstract base class for Winforms-Control and VS2008 Designer support?

  - by BeowulfOF

  Hi, I engadged a problem with inherited Controls in WinForms, and need some advice on it. I do use a base class for items in a List (selfmade GUI list made of a panel) and some inherited controls that are for each type of data that could be added to the…

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• .Net reflection to get description of class / property etc?

  - by ClarkeyBoy

  Hi, I know its unlikely but I was wondering if there is any way to get the comments (i.e. the bits after the ''') of a class or property..? I have managed to get a list of properties of a class using the PropertyInfo class but I cant find a way to get…

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• Template inheritence c++

  - by Chris Condy

  I have made a template singleton class, I have also made a data structure that is templated. My question is; how do I make my templated data structure inherit from a singleton so you can only have one float type of this structure? I have tested both…

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• Rails Gem Install Problems: Google-Geocode

  - by spin-docta

  I'm try to install google-geocode for rails sudo gem install google-geocode but I get the following error. Any suggestions? Building native extensions. This could take a while... ERROR: Error installing google-geocode: ERROR: Failed to build…

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• .Net reflection to get developers comments about class / property etc?

  - by ClarkeyBoy

  Hi, I know its unlikely but I was wondering if there is any way to get the comments (i.e. the bits after the ''') of a class or property..? I have managed to get a list of properties of a class using the PropertyInfo class but I cant find a way to…

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• Php code not executing - dies out when trying to create an object of class - no error displayed

  - by Ali

  I'm having some problems with this piece of code. I've included a class declaration and trying to create an object of that class but my code dies out. It doesn't seem to be an include issue as all the files are being included even the files called…

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